code: def _from_json(json):
      return tblockmatrix(
          element_type=dtype(json["element_type"]),
          shape=json["shape"],
          is_row_vector=json["is_row_vector"],
          block_size=json["block_size"],
      )
  
file_path: hail/hail/python/hail/expr/blockmatrix_type.py
imports: import pprint
  from hail.typecheck import typecheck_method, sequenceof
  from hail.utils.java import jiterable_to_list
  from hail.expr.types import dtype, hail_type
label_desc: Use image node_id 2 for calling the tblockmatrix obj's underlying member method code with example usage: obj._from_json(json) and returns: tblockmatrix